Question

Find the product (√x-√y)(√x-√y)

Answer 1

x - 2√(xy) +y

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Answer 2

Step-by-step explanation:

( √x- √y ) ( √ X - √y)

= ( √x -√y) ^2

= (√x) ^2 - 2*√x *√y + (√y) ^2

= X -2√x*y +y

( using the identity ( a-b) ^2 = a^2 -2*a*b + b ^2)